Radiological
Gross Beta / Photon Emitters in your water
Is Gross Beta / Photon Emitters in drinking water dangerous?
It depends on the level and how long you're exposed. The EPA legal limit (MCL) for Gross Beta / Photon Emitters is 50 pCi/L. Meeting the legal limit isn't the same as zero risk — test your water to know your level.
How do you remove Gross Beta / Photon Emitters from water?
Gross Beta / Photon Emitters is treated by Water Softener and Reverse Osmosis. Choose a system independently certified to NSF/ANSI standards to reduce Gross Beta / Photon Emitters, and test your water first to confirm the level.
Source: EPA MCL / MCLG; WHO guidelines; NSF/ANSI · 2026
Health effects
Beta and photon emitters are radioactive contaminants that can come from natural deposits or from nuclear activity. Long-term exposure increases cancer risk. The federal limit is expressed as an annual dose rather than a simple concentration.
The health-based goal vs. the legal limit
The federal legal limit (MCL) is the maximum allowed by law. The EPA health goal (MCLG) is the level below which no health risk is expected — it is non-enforceable and often stricter than the legal limit.
EPA health goal (MCLG)
No federal health goal set
Federal legal limit (MCL)
50 pCi/L
Source: EPA National Primary Drinking Water Regulations (MCL / MCLG) · 2026
What removes Gross Beta / Photon Emitters
Ion exchange
Water Softener
Swaps the calcium and magnesium that cause hard water for sodium — so scale stops forming.
Look for: NSF/ANSI 44 certification
How it works→Semipermeable membrane filtration
Reverse Osmosis
Pushes water through a fine membrane that removes the dissolved solids most filters miss.
Look for: NSF/ANSI 58 certification
How it works→Where Gross Beta / Photon Emitters has been found
Gross Beta / Photon Emitters shows up in the public water record for these cities. Each page has the measured level, the legal limit, and what removes it.
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Is Gross Beta / Photon Emitters in your water?
Check your city's public record, then book a free 30-minute test to confirm what's in your home.